function isRequestElementSet ($element);
/**
- * Getter for request element or 'null' if the element was not found
+ * Getter for request element or 'null' if element was not found
*
* @param $element Name of the request element we want to check
* @return $value Value of the found request element or 'null' if the
function getParameterNames ();
/**
- * Getter for a header element or 'null' if the header was not found
+ * Getter for a header element or 'null' if header was not found
*
* @param $headerName Name of the header
* @return $headerValue Value of the header or 'null' if not found